Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens is made of plastic material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, the sixth lens is made of glass material, and the seventh lens is made of plastic material. The camera optical lens further satisfies specific conditions.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese PatentApplications Ser. No. 201711365520.2 and Ser. No. 201711366941.7 filedon Dec. 18, 2017, the entire content of which is incorporated herein byreference.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. And, with the development oftechnology and the increase of the diverse demands of users, and underthis circumstances that the pixel area of photosensitive devices isshrinking steadily and the requirement of the system for the imagingquality is improving constantly, the five-piece, six-piece andseven-piece lens structure gradually appear in lens design. There is anurgent need for ultra-thin wide-angle camera lenses which have goodoptical characteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lensshown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG.1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lensshown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown inFIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5.

FIG. 9 is a schematic diagram of a camera optical lens in accordancewith a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lensshown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown inFIG. 9;

FIG. 12 presents the field curvature and distortion of the cameraoptical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of thepresent invention, the camera optical lens 10 comprises 7 lenses.Specifically, from the object side to the image side, the camera opticallens 10 comprises in sequence: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixthlens L6 and a seventh lens L7. Optical element like optical filter GFcan be arranged between the seventh lens L7 and the image surface Si.The first lens L1 is made of plastic material, the second lens L2 ismade of glass material, the third lens L3 is made of plastic material,the fourth lens L4 is made of plastic material, the fifth lens L5 ismade of plastic material, the sixth lens L6 is made of glass material,the seventh lens L7 is made of plastic material;

Here, the focal length of the whole camera optical lens 10 is defined asf, the focal length of the first lens is defined as f1. The cameraoptical lens 10 further satisfies the following condition:−10≤f1/f≤−3.1. Condition −10≤f1/f≤−3.1 fixes the negative refractivepower of the first lens L1. If the upper limit of the set value isexceeded, although it benefits the ultra-thin development of lenses, butthe negative refractive power of the first lens L1 will be too strong,problem like aberration is difficult to be corrected, and it is alsounfavorable for wide-angle development of lens. On the contrary, if thelower limit of the set value is exceeded, the negative refractive powerof the first lens L1 becomes too weak, it is then difficult to developultra-thin lenses. Preferably, the following condition shall besatisfied, −10≤f1/f≤−3.2.

The refractive power of the second lens L2 is n2. Here the followingcondition should satisfied: 1.7≤n2≤2.2. This condition fixes therefractive power of the second lens L2, and refractive power within thisrange benefits the ultra-thin development of lenses, and it alsobenefits the correction of aberration. Preferably, the followingcondition shall be satisfied, 1.7≤n2≤2.0.

The refractive power of the sixth lens L6 is n6. Here the followingcondition should satisfied: 1.7≤n6≤2.2. This condition fixes therefractive power of the sixth lens L6, and refractive power within thisrange benefits the ultra-thin development of lenses, and it alsobenefits the correction of aberration. Preferably, the followingcondition shall be satisfied, 1.7≤n6≤2.0.

The focal length of the sixth lens L6 is defined as f6, and the focallength of the seventh lens L7 is defined as f7. The camera optical lens10 should satisfy the following condition: 1≤f6/f7≤10, which fixes theratio between the focal length f6 of the sixth lens L6 and the focallength f7 of the seventh lens L7. A ratio within this range caneffectively reduce the sensitivity of lens group used in camera andfurther enhance the imaging quality. Preferably, the following conditionshall be satisfied, 1.14≤f6/f7≤9.5.

The curvature radius of the object side surface of the first lens L1 isdefined as R1, the curvature radius of the image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 furthersatisfies the following condition: −10≤(R1+R2)/(R1−R2)≤10, which fixesthe shape of the first lens L1, when the value is beyond this range,with the development into the direction of ultra-thin and wide-anglelenses, problem like aberration of the off-axis picture angle isdifficult to be corrected. Preferably, the condition−10≤(R1+R2)/(R1−R2)≤9.5 shall be satisfied.

When the focal length of the camera optical lens 10 of the presentinvention, the focal length of each lens, the refractive power of therelated lens, and the total optical length, the thickness on-axis andthe curvature radius of the camera optical lens satisfy the aboveconditions, the camera optical lens 10 has the advantage of highperformance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has a negativerefractive power.

The thickness on-axis of the first lens L1 is defined as d1. Thefollowing condition: 0.10≤d1≤0.33 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.17≤d1≤0.26 shall besatisfied.

In this embodiment, the object side surface of the second lens L2 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has positiverefractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the second lens L2 is f2. The following condition should besatisfied: 0.38≤f2/f≤1.33. When the condition is satisfied, the positiverefractive power of the second lens L2 is controlled within reasonablescope, the spherical aberration caused by the first lens L1 which hasnegative refractive power and the field curvature of the system then canbe reasonably and effectively balanced. Preferably, the condition0.61≤f2/f≤1.07 should be satisfied.

The curvature radius of the object side surface of the second lens L2 isdefined as R3, the curvature radius of the image side surface of thesecond lens L2 is defined as R4. The following condition should besatisfied: −2.21≤(R3+R4)/(R3−R4)≤−0.31, which fixes the shape of thesecond lens L2 and can effectively correct aberration of the cameraoptical lens. Preferably, the following condition shall be satisfied,−1.38≤(R3+R4)/(R3−R4)≤−0.39.

The thickness on-axis of the second lens L2 is defined as d3. Thefollowing condition: 0.23≤d3≤0.84 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.37≤d3≤0.67 shall besatisfied.

In this embodiment, the object side surface of the third lens L3 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the third lens L3 is f3. The following condition should besatisfied: −15.74≤f3/f≤−1.70. When the condition is satisfied, the fieldcurvature of the system can be reasonably and effectively balanced forfurther improving the image quality. Preferably, the condition−9.83≤f3/f≤−2.13 should be satisfied.

The curvature radius of the object side surface of the third lens L3 isdefined as R5, the curvature radius of the image side surface of thethird lens L3 is defined as R6. The following condition should besatisfied: 0.86≤(R5+R6)/(R5−R6)≤17.03, which is beneficial for theshaping of the third lens L3, and bad shaping and stress generation dueto extra large curvature of surface of the third lens L3 can be avoided.Preferably, the following condition shall be satisfied,1.37≤(R5+R6)/(R5−R6)≤13.62.

The thickness on-axis of the third lens L3 is defined as d5. Thefollowing condition: 0.11≤d5≤0.33 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.17≤d5≤0.26 shall besatisfied.

In this embodiment, the object side surface of the fourth lens L4 is aconvex surface relative to the proximal axis, the image side surface ofthe fourth lens L4 is a concave surface relative to the proximal axis.The fourth lens L4 has negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the fourth lens L4 is f4. The following condition should besatisfied: −10.25≤f4/f≤−2.29. When the condition is satisfied, theappropriate distribution of refractive power makes it possible that thesystem has better imaging quality and lower sensitivity. Preferably, thecondition −6.41≤f4/f≤−2.87 should be satisfied.

The curvature radius of the object side surface of the fourth lens L4 isdefined as R7, the curvature radius of the image side surface of thefourth lens L4 is defined as R8. The following condition should besatisfied: 1.24≤(R7+R8)/(R7−R8)≤5.30, which fixes the shaping of thefourth lens L4. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, 1.98≤(R7+R8)/(R7−R8)≤4.24.

The thickness on-axis of the fourth lens L4 is defined as d7. Thefollowing condition: 0.16≤d7≤0.55 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.26≤d7≤0.44 shall besatisfied.

In this embodiment, the object side surface of the fifth lens L5 is aconcave surface relative to the proximal axis, the image side surface ofthe fifth lens L5 is a convex surface relative to the proximal axis. Thefifth lens L5 has positive refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the fifth lens L5 is f5. The following condition should besatisfied: 0.26≤f5/f≤0.80, which can effectively make the light angle ofthe camera lens flat and reduces the tolerance sensitivity. Preferably,the condition 0.42≤f5/f≤0.64 should be satisfied.

The curvature radius of the object side surface of the fifth lens L5 isdefined as R9, the curvature radius of the image side surface of thefifth lens L5 is defined as R10. The following condition should besatisfied: 0.66≤(R9+R10)/(R9−R10)≤2.37, which fixes the shaping of thefifth lens L5. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, 1.06≤(R9+R10)/(R9−R10)≤1.90.

The thickness on-axis of the fifth lens L5 is defined as d9. Thefollowing condition: 0.46≤d9≤1.63 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.73≤d9≤1.30 shall besatisfied.

In this embodiment, the object side surface of the sixth lens L6 is aconcave surface relative to the proximal axis, the image side surface ofthe sixth lens L6 is a concave surface relative to the proximal axis,and it has negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the sixth lens L6 is f6. The following condition should besatisfied: −12.08≤f6/f≤−0.88. When the condition is satisfied, theappropriate distribution of refractive power makes it possible that thesystem has better imaging quality and lower sensitivity. Preferably, thecondition −7.55≤f6/f≤−1.10 should be satisfied.

The curvature radius of the object side surface of the sixth lens L6 isdefined as R11, the curvature radius of the image side surface of thesixth lens L6 is defined as R12. The following condition should besatisfied: −3.17≤(R11+R12)/(R11−R12)≤0.92, which fixes the shaping ofthe sixth lens L6. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, −1.98≤(R11+R12)/(R11−R12)≤0.74.

The thickness on-axis of the sixth lens L6 is defined as d11. Thefollowing condition: 0.10≤d11≤0.36 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.17≤d11≤0.29 shall besatisfied.

In this embodiment, the object side surface of the seventh lens L7 is aconvex surface relative to the proximal axis, the image side surface ofthe seventh lens L7 is a concave surface relative to the proximal axis,and it has negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the seventh lens L7 is f7. The following condition should besatisfied: −2.06≤f7/f≤−0.41. When the condition is satisfied, theappropriate distribution of refractive power makes it possible that thesystem has better imaging quality and lower sensitivity. Preferably, thecondition −1.29≤f7/f≤−0.51 should be satisfied.

The curvature radius of the object side surface of the seventh lens L7is defined as R13, the curvature radius of the image side surface of theseventh lens L7 is defined as R14. The following condition should besatisfied: 0.55≤(R13+R4)/(R13−R14)≤3.32, which fixes the shaping of theseventh lens L7. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, 0.88≤(R13+R14)/(R13−R14)≤2.66.

The thickness on-axis of the seventh lens L7 is defined as d13. Thefollowing condition: 0.23≤d13≤1.15 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.36≤d13≤0.92 shall besatisfied.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 6.10 mm, it is beneficial for therealization of ultra-thin lenses. Preferably, the total optical lengthTTL of the camera optical lens 10 is less than or equal to 5.82 mm.

In this embodiment, the aperture F number of the camera optical lens 10is less than or equal to 2.27. A large aperture has better imagingperformance. Preferably, the aperture F number of the camera opticallens 10 is less than or equal to 2.22.

With such design, the total optical length TTL of the whole cameraoptical lens 10 can be made as short as possible, thus theminiaturization characteristics can be maintained.

In the following, an example will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each exampleare as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surfaceof the first lens L1 to the image surface).

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be satisfied, thedescription below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the following, the unitof the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd vd S1 ∞ d0= −0.076 R1 1.5669 d1= 0.209 nd1 1.6713 v119.24 R2 1.2521 d2= 0.065 R3 2.2996 d3= 0.456 nd2 1.7130 v2 53.94 R445.1038 d4= 0.030 R5 3.2866 d5= 0.210 nd3 1.6713 v3 19.24 R6 2.7545 d6=0.444 R7 10.0562 d7= 0.366 nd4 1.6713 v4 19.24 R8 5.6223 d8= 0.214 R9−7.1106 d9= 1.087 nd5 1.5352 v5 56.09 R10 −0.9976 d10= 0.030 R11−84.8518 d11= 0.242 nd6 1.7130 v6 53.94 R12 20.3749 d12= 0.256 R1325.9785 d13= 0.455 nd7 1.5352 v7 56.09 R14 1.1802 d14= 0.571 R15 ∞ d15=0.210 ndg 1.5168 vg 64.17 R16 ∞ d16= 0.500

Where:

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the seventh lensL7;

R14: The curvature radius of the image side surface of the seventh lensL7;

R15: The curvature radius of the object side surface of the opticalfilter GF;

R16: The curvature radius of the image side surface of the opticalfilter GF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventhlens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the seventh lens L7;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF.

Table 2 shows the aspherical surface data of the camera optical lens 10in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −3.0808E+00 −3.6697E−02 −1.7449E−02  5.6928E−02 −2.4105E−012.8011E−01 −1.9095E−01 7.2132E−02 R2 −3.3658E+00 −2.4056E−02 −2.4980E−02−2.3537E−01  4.7434E−01 −6.1745E−01   4.5021E−01 −1.2150E−01  R3−1.2819E+01  8.5114E−02 −9.9215E−02  3.2114E−02  1.8914E−01 −7.4265E−02 −1.3919E−01 9.3210E−02 R4  9.9019E+01 −3.4350E−03 −1.3853E−01 4.2156E−01 −3.2357E−01 2.0982E−01 −2.0751E−01 4.9098E−02 R5  0.0000E+00−2.3142E−02 −2.2122E−01  4.6716E−01 −5.4677E−01 2.9750E−01 −1.7503E−013.9344E−02 R6  0.0000E+00 −4.7759E−02 −1.9030E−02 −6.5718E−02 9.3640E−02 1.7582E−04 −1.7357E−01 1.3019E−01 R7 −1.0013E+02 −1.2155E−01−9.6744E−03 −2.0197E−02  3.0719E−02 1.7967E−02 −3.6924E−02 1.3236E−02 R8 4.6954E+00 −9.3108E−02  1.9086E−03  2.5956E−03  7.2971E−04 2.1214E−03−1.0692E−03 −1.6221E−04  R9  2.4879E+00  1.1522E−02  2.3241E−02−9.0801E−03 −3.6611E−04 8.6143E−04  1.4946E−05 −7.5255E−05  R10−3.0472E+00 −7.0004E−02  3.1085E−02 −6.9998E−04 −3.4485E−04 −7.3665E−05 −1.8893E−05 7.6662E−06 R11  9.8895E+01 −1.3822E−02  1.6692E−03−1.8354E−04 −2.8821E−04 9.7025E−06  4.9394E−06 1.2265E−07 R12 1.6150E+01 −2.4596E−03  1.0464E−04 −2.5172E−05  1.3659E−06 9.5417E−07−1.0715E−07 −9.9909E−08  R13 −9.9009E+01 −8.7293E−03  1.5907E−04 1.9442E−04  1.2412E−05 −1.1958E−06  −5.1492E−07 −8.1165E−08  R14−6.4893E+00 −2.2535E−02  3.2669E−03 −3.3005E−04 −4.7588E−06 1.3861E−06 2.0176E−07 −3.1677E−08 

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 areaspheric surface indexes.

IH: Image heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, R1 and R2 represent respectively the objectside surface and image side surface of the first lens L1, R3 and R4represent respectively the object side surface and image side surface ofthe second lens L2, R5 and R6 represent respectively the object sidesurface and image side surface of the third lens L3, R7 and R8 representrespectively the object side surface and image side surface of thefourth lens L4, R9 and R10 represent respectively the object sidesurface and image side surface of the fifth lens L5, R11 and R12represent respectively the object side surface and image side surface ofthe sixth lens L6, R13 and R14 represent respectively the object sidesurface and image side surface of the seventh lens L7. The data in thecolumn named “inflexion point position” are the vertical distances fromthe inflexion points arranged on each lens surface to the optic axis ofthe camera optical lens 10. The data in the column named “arrest pointposition” are the vertical distances from the arrest points arranged oneach lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Inflexion point Inflexion point Inflexion point Inflexion pointnumber position 1 position 2 position 3 R1 1 0.655 R2 1 0.595 R3 0 R4 30.305 0.465 0.865 R5 1 0.565 R6 2 0.625 0.935 R7 2 0.255 1.175 R8 10.415 R9 2 0.655 1.385 R10 1 1.095 R11 0 R12 1 1.415 R13 1 0.595 R14 10.785

TABLE 4 Arrest point position Arrest point number Arrest point position1 2 R1 R2 R3 R4 R5 1 0.805 R6 R7 1 0.425 R8 1 0.725 R9 2 1.105 1.505 R10R11 R12 1 1.965 R13 1 1.065 R14 1 1.995

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4shows the field curvature and distortion schematic diagrams after lightwith a wavelength of 555 nm passes the camera optical lens 10 in thefirst embodiment, the field curvature S in FIG. 4 is a field curvaturein the sagittal direction, T is a field curvature in the meridiandirection.

Table 13 shows the various values of the embodiments 1, 2, 3 and thevalues corresponding with the parameters which are already specified inthe conditions.

As shown in Table 13, the first embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.72653 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 76.78°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 5 and table 6 show the design data of the camera optical lens 20in embodiment 2 of the present invention.

TABLE 5 R d nd vd S1 ∞ d0= 0.070 R1 42.3560 d1= 0.217 nd1 1.6713 v119.24 R2 15.8871 d2= 0.029 R3 3.1257 d3= 0.562 nd2 1.8042 v2 46.50 R4−9.5853 d4= 0.030 R5 8.9763 d5= 0.217 nd3 1.6713 v3 19.24 R6 4.1577 d6=0.621 R7 9.8850 d7= 0.320 nd4 1.6713 v4 19.24 R8 5.1338 d8= 0.140 R9−4.1350 d9= 0.918 nd5 1.5352 v5 56.09 R10 −0.9315 d10= 0.030 R11 −3.2051d11= 0.209 nd6 1.8042 v6 46.50 R12 −14.3414 d12= 0.030 R13 3.6650 d13=0.766 nd7 1.5352 v7 56.09 R14 1.1381 d14= 0.530 R15 ∞ d15= 0.210 ndg1.5168 vg 64.17 R16 ∞ d16= 0.500

Table 6 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1  9.9001E+01 −9.9318E−02 1.7136E−02 4.2085E−02 −8.7593E−02 2.6296E−01−3.2715E−01 1.3490E−01 R2 −5.5033E+01 −1.8956E−01 1.9101E−01−1.9678E−01   4.4094E−01 −5.4890E−01   3.1677E−01 −7.2655E−02  R3−1.8232E+01  1.4048E−03 7.1843E−03 6.0348E−03 −3.7388E−03 −1.2854E−02  1.4255E−02 −1.4358E−02  R4 −9.9392E+01 −1.6453E−02 −2.7327E−01 4.4982E−01 −3.5007E−01 2.0262E−01 −1.3416E−01 4.3592E−02 R5  0.0000E+00−6.2795E−02 −2.7586E−01  5.6585E−01 −4.5559E−01 2.8479E−01 −2.2268E−018.4274E−02 R6  0.0000E+00 −7.8569E−02 −2.4594E−02  7.5069E−02−8.3068E−02 6.4182E−02 −6.0606E−02 2.3800E−02 R7  4.3486E+01 −1.5927E−01−9.7210E−03  −3.0350E−02   2.1187E−02 1.7594E−02 −3.5873E−02 1.6165E−02R8  5.8143E+00 −1.2797E−01 9.2693E−03 2.0191E−03  1.1596E−03 2.7887E−03−4.6845E−04 1.9088E−04 R9  3.7410E+00  1.4618E−02 2.3921E−02−7.7711E−03  −2.5866E−05 8.3590E−04 −1.9303E−05 −1.0165E−04  R10−3.5821E+00 −6.3808E−02 3.2339E−02 −8.0317E−04  −4.8449E−04 −1.0075E−04 −1.6274E−05 2.0522E−06 R11 −5.7426E+01 −4.3083E−02 8.4821E−04 3.7306E−04−7.4981E−05 1.2050E−04  1.9750E−05 −4.7560E−06  R12  3.6437E+01−1.0230E−02 7.0894E−04 8.6547E−05  2.6235E−05 5.4852E−06  5.8400E−071.3898E−07 R13 −9.9405E+01 −1.6509E−03 −8.7615E−04  4.5394E−05 1.5672E−05 1.3687E−06 −1.6163E−08 −5.4454E−08  R14 −7.2637E+00−2.1820E−02 3.3673E−03 −3.1960E−04  −2.9101E−06 9.7771E−07  1.8190E−07−1.8928E−08 

Table 7 and table 8 show the inflexion points and the arrest pointdesign data of the camera optical lens 20 lens in embodiment 2 of thepresent invention.

TABLE 7 Inflexion point Inflexion point Inflexion point Inflexion pointnumber position 1 position 2 position 3 R1 1 0.145 R2 2 0.175 0.735 R3 10.835 R4 0 R5 1 0.305 R6 1 0.515 R7 2 0.235 1.135 R8 2 0.375 1.085 R9 20.835 1.325 R10 1 1.025 R11 1 1.495 R12 1 1.625 R13 3 0.785 2.055 2.175R14 1 0.765

TABLE 8 Arrest point position Arrest point number Arrest point position1 2 R1 1 0.245 R2 1 0.305 R3 R4 R5 1 0.505 R6 1 0.865 R7 1 0.405 R8 20.655 1.245 R9 R10 R11 R12 R13 R14 1 2.065

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 20 in the second embodiment. FIG.8 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 20 inthe second embodiment.

As shown in Table 13, the second embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.72859 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 76.74°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 9 and table 10 show the design data of the camera optical lens 30in embodiment 3 of the present invention.

TABLE 9 R d nd vd S1 ∞ d0= 0.150 R1 −4.0857 d1= 0.209 nd1 1.6713 v119.24 R2 −4.9938 d2= 0.027 R3 3.4608 d3= 0.527 nd2 1.8830 v2 40.81 R4−9.5185 d4= 0.030 R5 18.2575 d5= 0.217 nd3 1.6713 v3 19.24 R6 4.8179 d6=0.666 R7 11.7600 d7= 0.364 nd4 1.6713 v4 19.24 R8 4.9969 d8= 0.140 R9−4.5651 d9= 1.014 nd5 1.5352 v5 56.09 R10 −0.9370 d10= 0.030 R11 −3.4181d22= 0.210 nd6 1.8830 v6 40.81 R12 −15.0907 d12= 0.030 R13 2.9848 d13=0.732 nd7 1.5352 v7 56.09 R14 1.1288 d14= 0.636 R15 ∞ d15= 0.210 ndg1.5168 vg 64.17 R16 ∞ d16= 0.500

Table 10 shows the aspherical surface data of each lens of the cameraoptical lens 30 in embodiment 3 of the present invention.

TABLE 10 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 1.5396E+01 −1.7783E−02 3.6005E−02 5.0885E−02 −1.0656E−01 2.5940E−01−3.1533E−01 1.5522E−01 R2 2.2406E+01 −7.8483E−02 1.7257E−01 −2.3508E−01  4.5531E−01 −5.3451E−01   3.1326E−01 −6.3814E−02  R3 −1.8123E+01  6.6525E−03 −1.4733E−02  −1.4230E−02   8.9754E−04 −1.8744E−03  1.6334E−02 −2.0324E−02  R4 −7.5628E+01  −1.8308E−02 −2.7463E−01 4.5504E−01 −3.5700E−01 2.0247E−01 −1.3027E−01 4.3371E−02 R5 0.0000E+00−5.7928E−02 −2.7136E−01  5.6277E−01 −4.5554E−01 2.8546E−01 −2.2249E−018.3718E−02 R6 0.0000E+00 −8.3399E−02 −4.6234E−03  4.6315E−02 −7.9182E−027.2405E−02 −6.0538E−02 2.1490E−02 R7 4.6222E+01 −1.5620E−01 −9.1125E−03 −3.2017E−02   2.1515E−02 2.2006E−02 −3.1204E−02 1.2120E−02 R8 6.6801E+00−1.2427E−01 1.1206E−02 2.5090E−03  1.1528E−03 2.6930E−03 −6.0625E−041.8597E−05 R9 3.0760E+00  1.7406E−02 2.4735E−02 −7.5747E−03  −3.0017E−057.5389E−04 −5.0637E−05 −2.6193E−05  R10 −3.6397E+00  −6.7434E−023.0993E−02 −1.0680E−03  −5.2444E−04 −9.6702E−05  −1.0677E−06 1.1488E−05R11 −7.2146E+01  −3.9733E−02 7.4865E−04 2.1674E−04 −1.3447E−041.0873E−04  1.8169E−05 −4.9567E−06  R12 3.2606E+01 −1.0707E−028.2091E−04 1.1575E−04  2.5655E−05 4.1311E−06  4.0304E−07 2.2100E−07 R13−6.9898E+01   2.2832E−03 −1.1330E−03  8.4225E−06  1.5785E−05 1.9049E−06 5.7472E−08 −5.7192E−08  R14 −7.6159E+00  −1.9648E−02 3.1058E−03−3.0504E−04  −1.6172E−07 1.0822E−06  1.6998E−07 −2.1489E−08 

Table 11 and table 12 show the inflexion points and the arrest pointdesign data of the camera optical lens 30 lens in embodiment 3 of thepresent invention.

TABLE 11 Inflexion point Inflexion point Inflexion point number position1 position 2 R1 0 R2 0 R3 1 0.685 R4 0 R5 1 0.235 R6 1 0.475 R7 2 0.2151.135 R8 2 0.395 1.085 R9 1 0.735 R10 1 1.085 R11 1 1.555 R12 1 1.585R13 2 1.085 1.935 R14 1 0.765

TABLE 12 Arrest point position Arrest point number Arrest point position1 2 R1 R2 R3 1 0.955 R4 R5 1 0.375 R6 1 0.805 R7 1 0.365 R8 2 0.6851.255 R9 1 1.175 R10 R11 R12 R13 R14 1 2.175

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 30 in the third embodiment. FIG.12 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 30 inthe third embodiment.

As shown in Table 13, the third embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.73219 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 76.68°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

TABLE 13 Embodiment Embodiment Embodiment 1 2 3 f 3.798 3.803 3.811 f1−12.562 −37.647 −36.553 f2 3.372 2.978 2.917 f3 −29.884 −11.642 −9.724f4 −19.469 −16.206 −13.109 f5 2.035 2.035 2.000 f6 −22.943 −5.156 −5.025f7 −2.318 −3.438 −3.921 f6/f7 9.900 1.500 1.281 (R1 + R2)/(R1 − R2)8.956 2.200 −9.999 (R3 + R4)/(R3 − R4) −1.107 −0.508 −0.467 (R5 +R6)/(R5 − R6) 11.354 2.726 1.717 (R7 + R8)/(R7 − R8) 3.536 3.161 2.478(R9 + R10)/(R9 − R10) 1.326 1.582 1.517 (R11 + R12)/(R11 − R12) 0.613−1.576 −1.586 (R13 + R14)/(R13 − R14) 1.095 1.901 2.216 f1/f −3.307−9.900 −9.592 f2/f 0.888 0.783 0.766 f3/f −7.868 −3.061 −2.552 f4/f−5.126 −4.261 −3.440 f5/f 0.536 0.535 0.525 f6/f −6.040 −1.356 −1.319f7/f −0.610 −0.904 −1.029 d1 0.209 0.217 0.209 d3 0.456 0.562 0.527 d50.210 0.217 0.217 d7 0.366 0.320 0.364 d9 1.087 0.918 1.014 d11 0.2420.209 0.210 d13 0.455 0.766 0.732 Fno 2.200 2.200 2.200 TTL 5.346 5.3315.543 d1/TTL 0.039 0.041 0.038 n1 1.6713 1.6713 1.6713 n2 1.7130 1.80421.8830 n3 1.6713 1.6713 1.6713 n4 1.6713 1.6713 1.6713 n5 1.5352 1.53521.5352 n6 1.7130 1.8042 1.8830 n7 1.5352 1.5352 1.5352

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens;wherein first lens has a negative refractive power, the camera opticallens further satisfies the following conditions: −10≤f1/f≤−3.1;1.7≤n2≤2.2; 1.7≤n6≤2.2; 1≤f6/f7≤10; −10≤(R1+R2)/(R1−R2)≤10;0.10≤d1≤0.33; where f: the focal length of the camera optical lens; f1:the focal length of the first lens; f6: the focal length of the sixthlens; f7: the focal length of the seventh lens; n2: the refractive powerof the second lens; n6: the refractive power of the sixth lens; R1: thecurvature radius of object side surface of the first lens; R2: thecurvature radius of image side surface of the first lens; d1: thethickness on-axis of the first lens.
 2. The camera optical lens asdescribed in claim 1, wherein the first lens is made of plasticmaterial, the second lens is made of glass material, the third lens ismade of plastic material, the fourth lens is made of plastic material,the fifth lens is made of plastic material, the sixth lens is made ofglass material, the seventh lens is made of plastic material.
 3. Thecamera optical lens as described in claim 1 further satisfying thefollowing conditions: −10≤f1/f≤−3.2; 1.7≤n2≤2.0; 1.7≤n6≤2.0;1.14≤f6/f7≤9.5; −10≤(R1+R2)/(R1−R2)≤9.5; 0.17≤d1≤0.26.
 4. The cameraoptical lens as described in claim 1, wherein the second lens has apositive refractive power with a convex object side surface; the cameraoptical lens further satisfies the following conditions:0.38≈f2/f1≤1.33; −2.21≤(R3+R4)/(R3−R4)≤−0.31; 0.23≤d3≤0.84; where f: thefocal length of the camera optical lens; f2: the focal length of thesecond lens; R3: the curvature radius of the object side surface of thesecond lens; R4: the curvature radius of the image side surface of thesecond lens; d3: the thickness on-axis of the second lens.
 5. The cameraoptical lens as described in claim 4 further satisfying the followingconditions: 0.61≤f2/f≤1.07; −1.38≤(R3+R4)(R3−R4)≤−0.39; 0.37≤d3≤0.67. 6.The camera optical lens as described in claim 1, wherein the third lenshas a negative refractive power with a convex object side surface and aconcave image side surface; the camera optical lens further satisfiesthe following conditions: −15.75≤f3/f≤−1.70; 0.86≤(R5+R6)/(R5−R6)≤17.03;0.11≤d5≤0.33; where f: the focal length of the camera optical lens; f3:the focal length of the third lens; R5: the curvature radius of theobject side surface of the third lens; R6: the curvature radius of theimage side surface of the third lens; d5: the thickness on-axis of thethird lens.
 7. The camera optical lens as described in claim 6 furthersatisfying the following conditions: −9.83≤f3/f≤−2.13;1.37≤(R5+R6)/(R5−R6)≤13.62; 0.17≤d5≤0.026.
 8. The camera optical lens asdescribed in claim 1, wherein the fourth lens has a negative refractivepower with a convex object side surface and a concave image sidesurface; the camera optical lens further satisfies the followingconditions: −10.25≤f4/f≤−2.29; 1.24≤(R7+R8)/(R7−R8)≤5.30; 0.16≤d7≤0.55;where f: the focal length of the camera optical lens; f4: the focallength of the fourth lens; R7: the curvature radius of the object sidesurface of the fourth lens; R8: the curvature radius of the image sidesurface of the fourth lens; d7: the thickness on-axis of the fourthlens.
 9. The camera optical lens as described in claim 8 furthersatisfying the following conditions: −6.41≤f4/f≤−2.87;1.98≤(R7+R8)/(R7−R8)≤4.24; 0.26≤d7≤0.44.
 10. The camera optical lens asdescribed in claim 1, wherein the fifth lens has a positive refractivepower with a concave object side surface and a convex image sidesurface; the camera optical lens further satisfies the followingconditions: 0.26≤f5/f≤0.80; 0.66≤(R9+R10)/(R9−R10)≤2.37; 0.46≤d9≤1.63;where f: the focal length of the camera optical lens; f5: the focallength of the fifth lens; R9: the curvature radius of the object sidesurface of the fifth lens; R10: the curvature radius of the image sidesurface of the fifth lens; d9: the thickness on-axis of the fifth lens.11. The camera optical lens as described in claim 10 further satisfyingthe following conditions: 0.42≤f5/f≤0.64; 1.06≤(R9+R10)/(R9−R10)≤1.90;0.73≤d9≤1.30.
 12. The camera optical lens as described in claim 1,wherein the sixth lens has a negative refractive power with a concaveobject side surface; the camera optical lens further satisfies thefollowing conditions: −12.08≤f6/f≤−0.88;−3.17≤(R11+R12)/(R11−R12)≤−0.92; 0.10≤d11≤0.36; where f: the focallength of the camera optical lens; f6: the focal length of the sixthlens; R11: the curvature radius of the object side surface of the sixthlens; R12: the curvature radius of the image side surface of the sixthlens; d11: the thickness on-axis of the sixth lens.
 13. The cameraoptical lens as described in claim 12 further satisfying the followingconditions: −7.55≤f6/f≈−1.10; −1.98 (R11+R12)/(R11−R12)≤0.74;0.17≤d11≤0.29.
 14. The camera optical lens as described in claim 1,wherein the seventh lens has a negative refractive power with a convexobject side surface and a concave image side surface; the camera opticallens further satisfies the following conditions:0.55≤(R13+R14)/(R13−R14)≤3.32; −2.06≤f7/f≤−0.41; 0.23≤d13≤1.15; where f:the focal length of the camera optical lens; f7: the focal length of theseventh lens; d13: the thickness on-axis of the seventh lens; R13: thecurvature radius of the object side surface of the seventh lens; R14:the curvature radius of the image side surface of the seventh lens. 15.The camera optical lens as described in claim 14 further satisfying thefollowing conditions: 0.88≤(R13+R14)/(R13−R14)≤2.66; −1.29≤f7/f≤−0.51;0.36≤d13≤0.92.
 16. The camera optical lens as described in claim 1,wherein the total optical length TTL of the camera optical lens is lessthan or equal to 6.10 mm.
 17. The camera optical lens as described inclaim 16, wherein the total optical length TTL of the camera opticallens is less than or equal to 5.82 mm.
 18. The camera optical lens asdescribed in claim 1, wherein the aperture F number of the cameraoptical lens is less than or equal to 2.27.
 19. The camera optical lensas described in claim 18, wherein the aperture F number of the cameraoptical lens is less than or equal to 2.22.